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Finding the Fourth Proportional to 115,603, 173,404.50 and 28,051

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Solution

The fourth proportional to 115,603, 173,404.50 and 28,051 is: 42,076.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,603 : 173,404.50 = 28,051 : x
  2. Step 2: Convert to fraction form
    115,603/173,404.50 = 28,051/x
  3. Step 3: Cross multiply
    115,603x = 173,404.50 × 28,051
  4. Step 4: Simplify right side
    115,603x = 4,864,169,629.50
  5. Step 5: Solve for x
    x = 4,864,169,629.50/115,603
  6. Step 6: Final answer
    x = 42,076.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.